| 18 | |
| 19 | |
| 20 | class TestRecursion(TestCase): |
| 21 | def test_listrecursion(self): |
| 22 | x = [] |
| 23 | x.append(x) |
| 24 | try: |
| 25 | json.dumps(x) |
| 26 | except ValueError: |
| 27 | pass |
| 28 | else: |
| 29 | self.fail("didn't raise ValueError on list recursion") |
| 30 | x = [] |
| 31 | y = [x] |
| 32 | x.append(y) |
| 33 | try: |
| 34 | json.dumps(x) |
| 35 | except ValueError: |
| 36 | pass |
| 37 | else: |
| 38 | self.fail("didn't raise ValueError on alternating list recursion") |
| 39 | y = [] |
| 40 | x = [y, y] |
| 41 | # ensure that the marker is cleared |
| 42 | json.dumps(x) |
| 43 | |
| 44 | def test_dictrecursion(self): |
| 45 | x = {} |
| 46 | x["test"] = x |
| 47 | try: |
| 48 | json.dumps(x) |
| 49 | except ValueError: |
| 50 | pass |
| 51 | else: |
| 52 | self.fail("didn't raise ValueError on dict recursion") |
| 53 | x = {} |
| 54 | y = {"a": x, "b": x} |
| 55 | # ensure that the marker is cleared |
| 56 | json.dumps(y) |
| 57 | |
| 58 | def test_defaultrecursion(self): |
| 59 | enc = RecursiveJSONEncoder() |
| 60 | self.assertEqual(enc.encode(JSONTestObject), '"JSONTestObject"') |
| 61 | enc.recurse = True |
| 62 | try: |
| 63 | enc.encode(JSONTestObject) |
| 64 | except ValueError: |
| 65 | pass |
| 66 | else: |
| 67 | self.fail("didn't raise ValueError on default recursion") |
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